Departmental Papers (EES)

Document Type

Journal Article

Date of this Version

11-2008

Abstract

The hypothesis to test is internal gravity waves following a Garrett–Munk spectrum are sufficient to explain temporal coherence of sound at 3683 km in the Pacific Ocean for a signal at 75 Hz and a pulse resolution of 0.03 s. Signals from a 20 min transmission are collected on a towed array. After correcting the data for what likely appears to be acceleration of the receiver, the probability distribution for multipath coherence time is very similar to that obtained from Monte Carlo simulations of the impulse response. The most likely coherence time is 20 min, the longest that can be measured with a 20 min transmission. Predictions of multipath temporal coherence and amplitude fluctuations appear accurate enough to make useful predictions of channel capacity.

Comments

Suggested Citation:
Spiesberger, J.L. (2008). "Comparison of measured and modeled temporal coherence of sound near 75 Hz and 3683 km in the Pacific Ocean." Journal of the Acoustical Society of America. 124 (5). pp. 2805 - 2811.

© 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of the Acoustical Society of America and may be found at http://dx.doi.org/10.1121/1.2977676.

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Date Posted: 11 January 2011

This document has been peer reviewed.